Original sound recording: Flemish Radio Choir (VRK) Interview with Bo Holten in English, French, Dutch, German and Spanish, and German texts with translations in English, French, Dutch and Spanish, in accompanying booklet. Super audio compact disc (hybrid). Recorded at Jezuïetenkerk, Heverlee, Belgium, 25-27 Jun 2007. Produced by Manuel Mohino. Flemish Radio Choir ; Bo Holten, conductor. Sung in German.